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Reptile [31]
3 years ago
8

Salivary glands release a liquid called saliva, which helps to break food down.

Biology
2 answers:
polet [3.4K]3 years ago
5 0

Answer:

2. chemical

Explanation:

elixir [45]3 years ago
3 0
It would be 2, chemical:)
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Energy requires a balanced diet, physical activity, adequate sleep, satisfying work and opportunities for positive interaction.
Makovka662 [10]

Answer: 1. True

2. Between six and right hours

Explanation:

1. Energy simply refers to the ability to do work. It's the strength that's required to be able to sustain a mental or physical activity.

It should be noted that fir positive interaction, energy requires physical activity, a balanced diet, adequate sleep, satisfying work and opportunities. Therefore, the statement is true.

2. Even though the hours of sleep that's used by people typically varies, adults generally need about six to eight hours of sleep.

6 0
3 years ago
Apoptosis differs from necrosis in that necrosis:_______ a. requires the reception of an extracellular signal. b. causes DNA to
mote1985 [20]

Answer:

c. causes cells to swell and burst, whereas apoptotic cells shrink and condense

Explanation:

These two mechanism are responsible for death of cells in multi cellular organisms.Apoptosis is  naturally occurring process which is well organised and programmed.It is ensures the  automatic death of old and worn out cells, needed for certain cellular developments. This is demonstrated by DNA fragmentation,cell shrinkage,and the break down of the nuclear walls.It can be initiated through two pathways of intrinsic and extrinsic,The latter leads to death from internal factors,while in the former is when external factor causes the death .

However,when cell death is influenced by external factors(toxins)  in the cell environments,which lead to unpredictable or unregulated process leading to cell death ,the process is called Necrosis.it is demonstrated with the swelling and busting of the cell.and characterised with inflammation. It is an accidental death which causes injuries to the cells and tissues.

7 0
3 years ago
In fruit flies, the phenotype for eye color is determined by a certain locus. E indicates the dominant allele and e indicates th
Elanso [62]

Answer:

The genotypes of the original parents are

  • Male: X⁺Y  
  • Female: X⁻X⁻

The Chi-square analysis leads us to accept the prediction of the parental genotypes.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

Download pdf
8 0
3 years ago
Which best describes a scientific theory?
DENIUS [597]

Answer:

Hey there!

A theory can be best described as an idea that is supported by many different experiments.

Let me know if this helps :)

7 0
3 years ago
during the embryonic period, the embryo develops according to the proximodistal principle, which means that:
ehidna [41]

During the embryonic period, the embryo develops according to the proximodistal principle, which means that the embryo develops the center of the body before other parts are developed.

The embryo which undergo various degree of development in the womb. The embryo begins in the center of the body which houses a lot of important organs such as the heart , liver, kidney etc.

These organs require a very well defined and special development which is why development starts from this part.

The trunk of the body such as the hand and legs are developed after the center parts of the embryo is developed.

Read more on brainly.com/question/25281460

4 0
2 years ago
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